Side-by-side open source comparison

Cal.comOpen Source

Open source scheduling infrastructure — the Calendly alternative for individuals and teams

WeKanOpen Source

Open source kanban board similar to Trello for task management

Overview

Cal.comWeKan

TypeOpen SourceOpen Source

CategoryProject ManagementProject Management

PricingFree (self-hosted)Free (self-hosted)

Self-Hostable

LicenseAGPL-3.0MIT

GitHub Metrics

Cal.comWeKan

Stars41.5k20.9k

Forks12.9k3k

Contributors438286

Open Issues1.3k685

Last CommitApr 2026Apr 2026

Latest Release----

Cal.comWeKan

Health Score

93Excellent

72Good

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